6. Given a force vector F = {32i + 27j -12k} N and the axis a, whose direction is described by u = 0.34531 +0.4431j +0.8273k, what is the magnitude of the projection of F along the a axis? a. b. 43.6 N 13.1 N 12.9 N d. 19.1 N C.
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